<p>
  login works!
</p>
<div>
  <a [routerLink]='["/home/page1"]' [queryParams]='{name:20}'>page1</a>
</div>
<div>
  <a routerLink='/home/page2'>page2</a>
</div>
<div>
  <a routerLink='/home/page3'>page3</a>
</div>
<div>
  <a routerLink='/home/page4'>page4</a>
</div>
<div>
  <a routerLink='/dynamic/22'>dynamic</a>
</div>


<!-- 管道-->

<div>
  {{student | pi1 }}
</div>

<div> 
  <!-- 响应式编程  -->
  <input type="text" [value]='val' [formControl]="searchInput" >
</div>